One way Öhlins achieves this balance is our patented Dual Flow Valve. The DFV provides an additional oil bypass when bumps get severe. Engineers can tune the damper for increased support when turning and braking while maintaining composure over track curbing and rough pavement. This technology allows the use of linear spring rates (just like a motorsport application) for further chassis support without affecting daily comfort.
Another feature is the damping adjustability via a single “clicker” knob that proportionally increases compression and rebound damping to best suit the driver’s needs. Whether it’s a smooth track or a weekly commute, the dampers can be adjusted within their usable range to best suit track or street conditions. In other words, an engineering degree isn’t necessary each time an adjustment is necessary.
The BMW F82 M4 front shocks utilize monotube DFV struts with separate spring preload and height adjustment. For the rear, inverted, aluminum DFV shocks come with height adjustable spring perches. Separating spring preload from height adjustment allows precise height adjustment without affecting suspension travel. Considering the F82 M4 is already tuned as a high performance street car with track capability, Öhlins took the approach most drivers will utilize track-oriented tires and tailored the suspension to match. The tuning approach minimizes understeer without the necessity of aggressive alignment settings or wide front tire fitments, while still maintaining safety and comfort on the street.